@yepthatguy I have just driven along the Ampthill Road from Bedford and saw the buggies that you spotted over the weekend. There were three of them, all loaded with people, going along a track beside the road.
Coming from the retail park it was on the right hand side.
I have attempted a small map but my skills are not great.
The writing on the buggies was pretty small so I was unable to make out what it said. I could not see any logo.